Hikvision hcnetsdk.dll IVMS-42007 connection error, how to solve it?

Hcnetsdk.dll's missing problem, the solution steps are as follows:

1. Obtain hcnetsdk.dll documents through some channels, such as online search and download.

2. Secondly, copy the hcnetsdk.dll file to the DLL directory "C:\Windows\System32".

3. Click "Start Menu", select "Run" button, enter: REGSVR32 hcnetsdk.dll, and click OK.

4. At this time, a prompt for installing hcnetsdk.dll file will pop up, and click OK.